MoDaCo Custom ROM is based on official Samsung Galaxy S II ROM that either shipping or leaked. It was modified with optimisations, tweaks and complimentary additions that enhance the user experience. I took Gr5 vanilla edition for a test run. It is based on latest XXKH3 firmware, customised version of CF-Root and using own kernel with MoDaCo MCR optimisation scripts. And Samsung apps replaced by Google stock equivalents. Therefore, it is almost like AOSP Android ROM.
CPU score Quadrant is little bit low compare to other firmwares. But I don’t feel slowness in actual usage. By the way, it has EFS auto backup feature too. Nice to have to avoid missing IMEI issue. And you can even customize and cook this ROM by yourself too. Visit MoDaCo website for more information.
Installation guide ~ How to install firmware on Samsung Galaxy S2 with ClockworkMod Recovery?
Download MoDaCo Gr5 vanilla edition CWM ROM here.